Carbureter.



B. H. BIAYS.

CARBURETER.

APPLICATloN FILED MAR. z3. 19m.

Llln., Patented Dec. 28, l9l`5.

NORA/EVS BENJAMIN H. BIAYS, OF CUMBERLAND, MARYLAND, ASSIGNOR OF ONE-HALF TO WILLIAM S. BURGER, 0F CUMBERLAND, MARYLAND.

CARBURETEIR.

ricorra.

Specification of Letters Patent.

Patented Dec. 28, 1915.

Application filed March 23, 1914. Serial No. 826,462.

To all whom t may concern:

Be it known that I, BENJAMIN H. BIAYs, a citizen of the United States, and a resident of Cumberland, in the county of Allegany, in the State of Maryland, have made certain new and useful Improvements in Carbureters, of which the following is a specification.

My invention relates to improvements in carbureters, and it consists in the combinations, constructions, and arrangements herein described and claimed.

An object of my invention 'is to provide a carbureter in which the fluid fuel is delivered into the mixing chamber in a thin stream, together with a stream of air immediately adjacent, thus providing for a most intimate mixture of the gas or vapor and the air.

A further object of my invention is to provide a mixing chamber having heated walls against which the mixture of fluid fuel and air is directed, thus heating the mixture and providing for an eflicient explosive charge.

A further object of my invention is to provide means for regulating the amount of air and fuel to the needs of the engine, z'. e., for admitting a larger amount of fuel when a larger amount of air is being admitted.

Other objects and advantages' will 'appear in the following specification and the novel features of the device will be particularly pointed out in the appended claims.

My invention is illustrated in the accompanying drawing forming part of this application, this drawing being a central section through the device.

ln carrying out my invention I provide a` casing 1 which is provided with an outlet 2 in which is the throttle valve 3. The casing is provided with a Water acket 4 which has openings 5 and 6 arranged to be connected with the water jacket of the engine or other suitable heating means whereby a flow of heated liquid may be maintained through the water jacket. The float chamber consists of a casing 7 which is provided with a reduced portion 8 near its bottom, vsaid reduced 'portion being threaded internally at 9 to refee'ive the threaded end of a cylindrical guide member 10. The upper portion of the latter, as will be seen from the drawing, is provided with an outwardly extending flange 11 which supports an annular` flange 12. rlFhe latter flange forms an intermediate portion between the casing 7 and the casing .1. Screw bolts 13 or other suitable fasten- 1ng means connect the fiange 12 with the casing 1. The casing 7 is screwedupon the lower end of the cylindrical member 9 until the upper ends of the casing form a tight fit against an annular shoulder 14 on the bottom of the flange 12. The flange 12 may be provided with openings such as that shown at 15 for-the admission of air. I

The cylindrical member 10 is provided with a partition 16 and with an upwardly extending central portion 17. The cylinder 10 forms a'guide member for the body portion 18 of the valve proper. This body portion is provided with a recess 18a which conforms to the shape of the member 17. The upper portion of the valve member 18 is formed in the shape of a flaring head 20, which is provided with a beveled lower surface 21 arranged to normally engage the inner edge 22 of the flange 12. rIhe head 20 as well as the body portion 18 of the valve is provided with a central bore 23 from which radiate smaller bores 24, tubes 25 being secured in the head for forming a continuation of the bores 24.V These tubes are disposed centrally of largerbores 26 lhaving passages 27 leading downwardly therefrom.

A needle valve 28 is provided with a. head 29, which is held by a cap 30 on the valve, the end of the needle valve proj ecting downwardly into the end of a pipe 31. rlhe lower end of the pipe is provided with a solid extension 82 which is threaded, as shown in the drawings, and which is provided with a thumb wheel 33 at the bottom. The threaded portion 32 extends into a threaded cylindrical reduced portion 34 which is integral with the reduced portion 8. A cap 35 is screwed on the exterior portion of the member 34 and is provided with packing material 36.l The pipe 31 is provided with openings below the partition 16. The cylinder 10 is rovided with an oil passage 38 leadbelow the partition 1 6. A float 40 of the ordinary construction 1s provided for the floatA ing from the float chamber 39 into the space thereof may be readily understood. The

mixing chamber is heated in the manner described by passing a heated fluid into the l5 chamber,

jacket 4. `When the engine is started and the valve 3 is turned to admit fuel the suction of the engine Will cause the valve to lift off from its seat, that is to say the body 5 portion 18 and the-head 2() connected therewith will rise. Air will be sucked in through the opening 15 and will pass into the mixing chamber by two paths, one directly around the outer edges of the valve between the inclined surface 21 and the seat 2Q, and the other being through the opening 27 and through the bores 26. At the same time fuel is being drawn through the pipe 31 which, as will be seen is in communication with the fuel chamber 39 by means of the passage 38 and openings 37, and thence out through the bores Z-l and the pipes The fuel and air will form an intimate mixture and will be directed against the walls of the mixing Chamber. the latter charge is it is brought into intimate contact with the heated walls as it passes. The explosive charge is now in its most efficient condition for economically driving the engine, since the fuel and air is thoroughly mixed and is heated besides. As the throttle valve 3 is further opened and the Work on the engine increases, the main valve will be lifted farther from its seat and so Will the needle valve 28. Thus the amount of fuel is automatically maintained inproportion to the amount of air drawn in, or vice versa. By turning the thumb wheel 33 the pipe 31 may be moved with respect to the needle valve As will be seen from the drawing are curved so that as the explosive '28, thereby admitting more fuel 'or decreasf and the space'.4

ing the flow. The recess 18a underneath the body portion 18 of the valve acts as a dash pot, thereby-rendering the action of the valve more uniform.

I claim f l. In a carbureter,

a mixing chamber, means for heatin the Walls of the mixing said mlxing chamber having an annular air inlet, a valve for normally closing said inlet, said valve having a central bore, and a radial fuel passage extending laterally from said central bore, a fuel chain-1f i0 ber having connection with said central bore,"

and an auxiliary'air conduit for delivering a portion of the air at an angleto the air entering said annular air inlet, the delivery end of said, auxiliary air conduit surround- 5 'ing said laterally extending fuel passage.

2. In a carbureter, -a mixing chamber hav-` ing a water jacket and being provided With an air inlet in its bottom, 4a vertically movdrawn out of the mixing chamber able valve for controlling the admission of air-through said inlet, said valve having a central bore and being provided with a series of L-sliaped auxiliary air inlets, poi'- tions of said air inlets being disposed in radial relation With respect to said central bore, a series of fuel passages extending radially from said central bore, the delivery ends. of said fuel passages being in close proximity to the delivery ends of said L- shaped air inlets, means for supplying fuel to said central bore, and a needle valve disposed within said central bore, a portion of said needle valve being secured to and movy able with said air valve.

3. In a carbureter, a mixing chamber having an annular air inlet, a fuel chamber, a valve'for normally closing said inlet, said valve having a central bore, a pipe disposed within said central bore and movable longitudinally of the bore, said pipe communieating at all times with said fuel chamber, a needle valve carried by said first named valve a-nd arranged to extend into one end of said pipe, radially extending fuel passages communicating with the central bore, tubes disposed in the outer ends of said fuel passages, and auxiliary air conduits surrounding' said last named tubes and coinmunicating with the air inlet.

4. In a carbureter, a mixing chamber having an annular air inlet, a fuel chamber, a valve for normally closing said inlet, said valve having a central bore, a pipe disposed Within said central bore and having a threaded. portion arranged to pass through pipe being provided 4with openings, some of said openings being in communication with the interior of said fuel chamber in anyposition of the pipe, a needle valve carried by said first named valve and arranged to extend into the end of said pipe, radially extending fuel passages communicating with said bore, tubes disposed in the ends of said radially extending passages,- the outer ends of the tubes being directed toward the Walls -ffzefthe mixing chamber, and air conduits surrounding said last named tubes for delivering air against the walls of the mixing chamber, each of said air conduits communicating with the annular air inlet.

BENJAMIN H. BIAYS.

v Witnesses:

L. A. STANLEY, GEO. S. LIVINGSTON. 

